./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 91d7b70e505e7aef19ce206c76dac3b8838d1608e22286f0e4e4335d9f63c057 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:57:55,440 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:57:55,516 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:57:55,524 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:57:55,525 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:57:55,546 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:57:55,547 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:57:55,547 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:57:55,548 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:57:55,548 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:57:55,549 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:57:55,549 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:57:55,550 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:57:55,550 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:57:55,551 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:57:55,551 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:57:55,552 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:57:55,552 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:57:55,552 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:57:55,553 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:57:55,553 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:57:55,554 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:57:55,554 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:57:55,554 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:57:55,555 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:57:55,555 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:57:55,555 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:57:55,556 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:57:55,556 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:57:55,556 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:57:55,557 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:57:55,557 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:57:55,557 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:57:55,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:57:55,558 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:57:55,559 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:57:55,559 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:57:55,559 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:57:55,560 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:57:55,560 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:57:55,560 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:57:55,561 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:57:55,561 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91d7b70e505e7aef19ce206c76dac3b8838d1608e22286f0e4e4335d9f63c057 [2024-10-11 19:57:55,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:57:55,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:57:55,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:57:55,854 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:57:55,855 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:57:55,856 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2024-10-11 19:57:57,250 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:57:57,438 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:57:57,439 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2024-10-11 19:57:57,448 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/fb180ce65/55af6102435d4fbcb8d227eba4f486e3/FLAGe88234558 [2024-10-11 19:57:57,465 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/fb180ce65/55af6102435d4fbcb8d227eba4f486e3 [2024-10-11 19:57:57,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:57:57,472 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:57:57,473 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:57:57,473 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:57:57,479 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:57:57,480 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:57:57" (1/1) ... [2024-10-11 19:57:57,481 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50a229eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:57, skipping insertion in model container [2024-10-11 19:57:57,481 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:57:57" (1/1) ... [2024-10-11 19:57:57,508 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:57:57,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:57:57,725 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-11 19:57:57,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e5ab51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:57, skipping insertion in model container [2024-10-11 19:57:57,727 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:57:57,727 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 19:57:57,729 INFO L158 Benchmark]: Toolchain (without parser) took 256.48ms. Allocated memory is still 167.8MB. Free memory was 97.0MB in the beginning and 85.4MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 19:57:57,729 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 167.8MB. Free memory is still 122.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:57:57,730 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.02ms. Allocated memory is still 167.8MB. Free memory was 96.8MB in the beginning and 85.6MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 19:57:57,731 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 167.8MB. Free memory is still 122.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.02ms. Allocated memory is still 167.8MB. Free memory was 96.8MB in the beginning and 85.6MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 113]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 91d7b70e505e7aef19ce206c76dac3b8838d1608e22286f0e4e4335d9f63c057 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:57:59,868 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:57:59,944 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 19:57:59,952 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:57:59,953 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:57:59,989 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:57:59,989 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:57:59,990 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:57:59,991 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:57:59,992 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:57:59,992 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:57:59,992 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:57:59,993 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:57:59,993 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:57:59,993 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:57:59,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:57:59,994 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:57:59,994 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:57:59,994 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:57:59,995 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:57:59,995 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:57:59,996 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:57:59,996 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:57:59,996 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:57:59,997 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:57:59,997 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 19:57:59,997 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:57:59,997 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 19:57:59,997 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:57:59,998 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:57:59,998 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:57:59,998 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:57:59,998 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:57:59,998 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:57:59,999 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:57:59,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:58:00,000 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:58:00,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:58:00,005 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 19:58:00,005 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 19:58:00,005 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:58:00,006 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:58:00,006 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:58:00,006 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:58:00,006 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 19:58:00,007 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91d7b70e505e7aef19ce206c76dac3b8838d1608e22286f0e4e4335d9f63c057 [2024-10-11 19:58:00,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:58:00,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:58:00,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:58:00,368 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:58:00,369 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:58:00,371 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2024-10-11 19:58:01,910 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:58:02,164 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:58:02,169 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2024-10-11 19:58:02,182 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/0f1df5b4e/0011776c5106439eb63f912d51ca64c8/FLAGf1933d426 [2024-10-11 19:58:02,487 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/0f1df5b4e/0011776c5106439eb63f912d51ca64c8 [2024-10-11 19:58:02,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:58:02,492 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:58:02,495 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:58:02,496 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:58:02,501 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:58:02,503 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:58:02" (1/1) ... [2024-10-11 19:58:02,504 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec99c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:02, skipping insertion in model container [2024-10-11 19:58:02,504 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:58:02" (1/1) ... [2024-10-11 19:58:02,531 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:58:02,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:58:02,796 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 19:58:02,801 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:58:02,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:58:02,840 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:58:02,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:58:02,949 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:58:02,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:02 WrapperNode [2024-10-11 19:58:02,952 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:58:02,954 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:58:02,954 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:58:02,954 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:58:02,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:02" (1/1) ... [2024-10-11 19:58:02,973 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:02" (1/1) ... [2024-10-11 19:58:03,006 INFO L138 Inliner]: procedures = 26, calls = 37, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 190 [2024-10-11 19:58:03,009 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:58:03,010 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:58:03,011 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:58:03,012 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:58:03,022 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:02" (1/1) ... [2024-10-11 19:58:03,023 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:02" (1/1) ... [2024-10-11 19:58:03,033 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:02" (1/1) ... [2024-10-11 19:58:03,063 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-11 19:58:03,064 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:02" (1/1) ... [2024-10-11 19:58:03,064 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:02" (1/1) ... [2024-10-11 19:58:03,078 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:02" (1/1) ... [2024-10-11 19:58:03,085 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:02" (1/1) ... [2024-10-11 19:58:03,092 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:02" (1/1) ... [2024-10-11 19:58:03,093 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:02" (1/1) ... [2024-10-11 19:58:03,098 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:58:03,101 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:58:03,102 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:58:03,102 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:58:03,103 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:02" (1/1) ... [2024-10-11 19:58:03,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:58:03,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:58:03,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:58:03,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:58:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:58:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 19:58:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 19:58:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 19:58:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 19:58:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:58:03,190 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:58:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:58:03,190 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:58:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 19:58:03,191 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 19:58:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 19:58:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 19:58:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 19:58:03,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:58:03,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:58:03,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 19:58:03,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 19:58:03,194 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:58:03,343 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:58:03,345 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:58:03,835 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:58:03,835 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:58:04,198 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:58:04,199 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-11 19:58:04,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:58:04 BoogieIcfgContainer [2024-10-11 19:58:04,200 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:58:04,203 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:58:04,203 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:58:04,206 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:58:04,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:58:02" (1/3) ... [2024-10-11 19:58:04,207 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248f8f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:58:04, skipping insertion in model container [2024-10-11 19:58:04,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:02" (2/3) ... [2024-10-11 19:58:04,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248f8f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:58:04, skipping insertion in model container [2024-10-11 19:58:04,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:58:04" (3/3) ... [2024-10-11 19:58:04,211 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2024-10-11 19:58:04,228 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:58:04,228 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-11 19:58:04,228 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:58:04,285 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 19:58:04,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 115 flow [2024-10-11 19:58:04,368 INFO L124 PetriNetUnfolderBase]: 4/44 cut-off events. [2024-10-11 19:58:04,370 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 19:58:04,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 4/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 82 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-10-11 19:58:04,375 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 47 transitions, 115 flow [2024-10-11 19:58:04,379 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 43 transitions, 104 flow [2024-10-11 19:58:04,390 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:58:04,399 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@29a207eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:58:04,399 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-10-11 19:58:04,403 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:58:04,405 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 19:58:04,406 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:58:04,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:04,407 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:58:04,407 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-11 19:58:04,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:04,413 INFO L85 PathProgramCache]: Analyzing trace with hash 607647, now seen corresponding path program 1 times [2024-10-11 19:58:04,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:04,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781832341] [2024-10-11 19:58:04,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:04,427 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:04,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:04,430 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:58:04,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-11 19:58:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:04,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:58:04,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:04,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:58:04,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:04,622 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:58:04,623 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:04,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781832341] [2024-10-11 19:58:04,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781832341] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:58:04,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:58:04,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:58:04,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750963918] [2024-10-11 19:58:04,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:58:04,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:58:04,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:04,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:58:04,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:58:04,684 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-11 19:58:04,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:04,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:04,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-11 19:58:04,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:05,161 INFO L124 PetriNetUnfolderBase]: 1316/1969 cut-off events. [2024-10-11 19:58:05,161 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-10-11 19:58:05,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3982 conditions, 1969 events. 1316/1969 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10408 event pairs, 1060 based on Foata normal form. 1/1373 useless extension candidates. Maximal degree in co-relation 3676. Up to 1877 conditions per place. [2024-10-11 19:58:05,182 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 30 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2024-10-11 19:58:05,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 162 flow [2024-10-11 19:58:05,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:58:05,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:58:05,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-10-11 19:58:05,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-10-11 19:58:05,199 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 104 flow. Second operand 3 states and 70 transitions. [2024-10-11 19:58:05,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 162 flow [2024-10-11 19:58:05,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 150 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 19:58:05,217 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 90 flow [2024-10-11 19:58:05,224 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2024-10-11 19:58:05,230 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -7 predicate places. [2024-10-11 19:58:05,230 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 90 flow [2024-10-11 19:58:05,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:05,231 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:05,231 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:58:05,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-10-11 19:58:05,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:05,434 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-11 19:58:05,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:05,435 INFO L85 PathProgramCache]: Analyzing trace with hash 607648, now seen corresponding path program 1 times [2024-10-11 19:58:05,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:05,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541790371] [2024-10-11 19:58:05,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:05,436 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:05,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:05,438 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:58:05,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-11 19:58:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:05,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:58:05,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:05,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:58:05,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:05,644 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:58:05,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:05,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541790371] [2024-10-11 19:58:05,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541790371] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:58:05,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:58:05,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:58:05,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613841549] [2024-10-11 19:58:05,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:58:05,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:58:05,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:05,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:58:05,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:58:05,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-11 19:58:05,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:05,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:05,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-11 19:58:05,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:06,164 INFO L124 PetriNetUnfolderBase]: 1317/1972 cut-off events. [2024-10-11 19:58:06,165 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 19:58:06,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3904 conditions, 1972 events. 1317/1972 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10372 event pairs, 1060 based on Foata normal form. 0/1375 useless extension candidates. Maximal degree in co-relation 3882. Up to 1882 conditions per place. [2024-10-11 19:58:06,179 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 32 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-10-11 19:58:06,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 170 flow [2024-10-11 19:58:06,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:58:06,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:58:06,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-10-11 19:58:06,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4521276595744681 [2024-10-11 19:58:06,183 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 90 flow. Second operand 4 states and 85 transitions. [2024-10-11 19:58:06,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 170 flow [2024-10-11 19:58:06,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:58:06,186 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 113 flow [2024-10-11 19:58:06,187 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2024-10-11 19:58:06,188 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2024-10-11 19:58:06,191 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 113 flow [2024-10-11 19:58:06,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:06,192 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:06,192 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 19:58:06,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-11 19:58:06,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:06,395 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-11 19:58:06,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:06,395 INFO L85 PathProgramCache]: Analyzing trace with hash 583968283, now seen corresponding path program 1 times [2024-10-11 19:58:06,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:06,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978655895] [2024-10-11 19:58:06,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:06,396 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:06,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:06,398 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:58:06,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-11 19:58:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:06,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:58:06,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:06,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:58:06,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:06,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:58:06,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:06,948 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:06,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978655895] [2024-10-11 19:58:06,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978655895] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:58:06,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:58:06,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 19:58:06,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568913034] [2024-10-11 19:58:06,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:58:06,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:58:06,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:06,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:58:06,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:58:07,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-11 19:58:07,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 113 flow. Second operand has 10 states, 10 states have (on average 13.0) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:07,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:07,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-11 19:58:07,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:07,783 INFO L124 PetriNetUnfolderBase]: 1320/1981 cut-off events. [2024-10-11 19:58:07,784 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 19:58:07,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3941 conditions, 1981 events. 1320/1981 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10491 event pairs, 1060 based on Foata normal form. 0/1380 useless extension candidates. Maximal degree in co-relation 3889. Up to 1885 conditions per place. [2024-10-11 19:58:07,796 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 32 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-10-11 19:58:07,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 239 flow [2024-10-11 19:58:07,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:58:07,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:58:07,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-10-11 19:58:07,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3574468085106383 [2024-10-11 19:58:07,802 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 113 flow. Second operand 10 states and 168 transitions. [2024-10-11 19:58:07,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 239 flow [2024-10-11 19:58:07,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:58:07,804 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 190 flow [2024-10-11 19:58:07,805 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=190, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-10-11 19:58:07,806 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2024-10-11 19:58:07,806 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 190 flow [2024-10-11 19:58:07,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.0) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:07,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:07,807 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 19:58:07,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-10-11 19:58:08,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:08,010 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-11 19:58:08,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:08,011 INFO L85 PathProgramCache]: Analyzing trace with hash 925181097, now seen corresponding path program 1 times [2024-10-11 19:58:08,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:08,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581718949] [2024-10-11 19:58:08,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:08,012 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:08,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:08,014 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:58:08,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-11 19:58:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:08,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 19:58:08,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:08,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:58:08,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:08,091 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:58:08,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:08,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581718949] [2024-10-11 19:58:08,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581718949] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:58:08,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:58:08,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:58:08,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476577038] [2024-10-11 19:58:08,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:58:08,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:58:08,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:08,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:58:08,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:58:08,113 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-11 19:58:08,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:08,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:08,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-11 19:58:08,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:08,337 INFO L124 PetriNetUnfolderBase]: 796/1215 cut-off events. [2024-10-11 19:58:08,337 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-11 19:58:08,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2443 conditions, 1215 events. 796/1215 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5751 event pairs, 608 based on Foata normal form. 0/969 useless extension candidates. Maximal degree in co-relation 2409. Up to 1138 conditions per place. [2024-10-11 19:58:08,345 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 35 selfloop transitions, 6 changer transitions 0/49 dead transitions. [2024-10-11 19:58:08,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 49 transitions, 266 flow [2024-10-11 19:58:08,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:58:08,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:58:08,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2024-10-11 19:58:08,349 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425531914893617 [2024-10-11 19:58:08,349 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 190 flow. Second operand 4 states and 80 transitions. [2024-10-11 19:58:08,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 49 transitions, 266 flow [2024-10-11 19:58:08,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 49 transitions, 236 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-11 19:58:08,352 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 166 flow [2024-10-11 19:58:08,352 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-10-11 19:58:08,353 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 4 predicate places. [2024-10-11 19:58:08,353 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 166 flow [2024-10-11 19:58:08,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:08,353 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:08,353 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 19:58:08,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-11 19:58:08,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:08,557 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-11 19:58:08,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:08,557 INFO L85 PathProgramCache]: Analyzing trace with hash 925181098, now seen corresponding path program 1 times [2024-10-11 19:58:08,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:08,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142475223] [2024-10-11 19:58:08,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:08,558 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:08,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:08,560 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:58:08,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-11 19:58:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:08,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 19:58:08,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:08,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:58:08,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:08,751 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:58:08,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:08,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142475223] [2024-10-11 19:58:08,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142475223] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:58:08,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:58:08,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:58:08,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303786609] [2024-10-11 19:58:08,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:58:08,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:58:08,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:08,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:58:08,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:58:08,809 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-11 19:58:08,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:08,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:08,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-11 19:58:08,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:09,405 INFO L124 PetriNetUnfolderBase]: 1582/2433 cut-off events. [2024-10-11 19:58:09,405 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-11 19:58:09,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4770 conditions, 2433 events. 1582/2433 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 12832 event pairs, 614 based on Foata normal form. 0/1975 useless extension candidates. Maximal degree in co-relation 4739. Up to 1409 conditions per place. [2024-10-11 19:58:09,417 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 65 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2024-10-11 19:58:09,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 84 transitions, 394 flow [2024-10-11 19:58:09,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:58:09,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:58:09,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-10-11 19:58:09,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4929078014184397 [2024-10-11 19:58:09,419 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 166 flow. Second operand 6 states and 139 transitions. [2024-10-11 19:58:09,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 84 transitions, 394 flow [2024-10-11 19:58:09,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 84 transitions, 387 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:58:09,424 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 216 flow [2024-10-11 19:58:09,424 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-10-11 19:58:09,425 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2024-10-11 19:58:09,426 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 216 flow [2024-10-11 19:58:09,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:09,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:09,427 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:09,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-11 19:58:09,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:09,628 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-11 19:58:09,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:09,628 INFO L85 PathProgramCache]: Analyzing trace with hash 24055492, now seen corresponding path program 1 times [2024-10-11 19:58:09,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:09,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923935625] [2024-10-11 19:58:09,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:09,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:09,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:09,632 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:58:09,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-11 19:58:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:09,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 19:58:09,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:09,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:58:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:09,944 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:58:09,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:09,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923935625] [2024-10-11 19:58:09,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923935625] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:58:09,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:58:09,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:58:09,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709204049] [2024-10-11 19:58:09,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:58:09,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:58:09,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:09,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:58:09,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:58:10,031 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-11 19:58:10,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:10,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:10,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-11 19:58:10,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:10,901 INFO L124 PetriNetUnfolderBase]: 3045/4541 cut-off events. [2024-10-11 19:58:10,901 INFO L125 PetriNetUnfolderBase]: For 1511/1672 co-relation queries the response was YES. [2024-10-11 19:58:10,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10625 conditions, 4541 events. 3045/4541 cut-off events. For 1511/1672 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 24784 event pairs, 1261 based on Foata normal form. 193/4257 useless extension candidates. Maximal degree in co-relation 10591. Up to 2636 conditions per place. [2024-10-11 19:58:10,937 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 73 selfloop transitions, 14 changer transitions 0/95 dead transitions. [2024-10-11 19:58:10,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 95 transitions, 528 flow [2024-10-11 19:58:10,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:58:10,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:58:10,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-10-11 19:58:10,939 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4858156028368794 [2024-10-11 19:58:10,939 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 216 flow. Second operand 6 states and 137 transitions. [2024-10-11 19:58:10,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 95 transitions, 528 flow [2024-10-11 19:58:10,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 95 transitions, 507 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:58:10,946 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 275 flow [2024-10-11 19:58:10,946 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2024-10-11 19:58:10,947 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 13 predicate places. [2024-10-11 19:58:10,947 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 275 flow [2024-10-11 19:58:10,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:10,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:10,948 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:10,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-11 19:58:11,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:11,151 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-11 19:58:11,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:11,152 INFO L85 PathProgramCache]: Analyzing trace with hash 577988239, now seen corresponding path program 1 times [2024-10-11 19:58:11,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:11,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998270439] [2024-10-11 19:58:11,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:11,152 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:11,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:11,154 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:58:11,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-11 19:58:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:11,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 19:58:11,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:11,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:58:11,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:11,369 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:58:11,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:11,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1998270439] [2024-10-11 19:58:11,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1998270439] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:58:11,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:58:11,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:58:11,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619321848] [2024-10-11 19:58:11,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:58:11,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:58:11,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:11,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:58:11,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:58:11,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-10-11 19:58:11,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 275 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:11,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:11,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-10-11 19:58:11,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:12,254 INFO L124 PetriNetUnfolderBase]: 3157/4667 cut-off events. [2024-10-11 19:58:12,255 INFO L125 PetriNetUnfolderBase]: For 4247/4630 co-relation queries the response was YES. [2024-10-11 19:58:12,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13006 conditions, 4667 events. 3157/4667 cut-off events. For 4247/4630 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 25315 event pairs, 2080 based on Foata normal form. 389/4805 useless extension candidates. Maximal degree in co-relation 12970. Up to 4057 conditions per place. [2024-10-11 19:58:12,301 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 73 selfloop transitions, 5 changer transitions 0/88 dead transitions. [2024-10-11 19:58:12,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 88 transitions, 509 flow [2024-10-11 19:58:12,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:58:12,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:58:12,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-10-11 19:58:12,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.548936170212766 [2024-10-11 19:58:12,303 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 275 flow. Second operand 5 states and 129 transitions. [2024-10-11 19:58:12,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 88 transitions, 509 flow [2024-10-11 19:58:12,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 88 transitions, 502 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:58:12,317 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 317 flow [2024-10-11 19:58:12,317 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=317, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-10-11 19:58:12,318 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 17 predicate places. [2024-10-11 19:58:12,318 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 317 flow [2024-10-11 19:58:12,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:12,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:12,319 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:12,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-11 19:58:12,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:12,520 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-11 19:58:12,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:12,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1634798638, now seen corresponding path program 1 times [2024-10-11 19:58:12,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:12,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953825941] [2024-10-11 19:58:12,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:12,521 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:12,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:12,524 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:58:12,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-11 19:58:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:12,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 19:58:12,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:12,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:12,665 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:58:12,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:12,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953825941] [2024-10-11 19:58:12,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [953825941] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:58:12,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:58:12,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:58:12,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450077434] [2024-10-11 19:58:12,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:58:12,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:58:12,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:12,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:58:12,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:58:12,691 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-11 19:58:12,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 317 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:12,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:12,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-11 19:58:12,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:13,402 INFO L124 PetriNetUnfolderBase]: 3545/5136 cut-off events. [2024-10-11 19:58:13,402 INFO L125 PetriNetUnfolderBase]: For 8549/8988 co-relation queries the response was YES. [2024-10-11 19:58:13,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16414 conditions, 5136 events. 3545/5136 cut-off events. For 8549/8988 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 26815 event pairs, 2433 based on Foata normal form. 324/5072 useless extension candidates. Maximal degree in co-relation 16376. Up to 4618 conditions per place. [2024-10-11 19:58:13,436 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 70 selfloop transitions, 5 changer transitions 0/84 dead transitions. [2024-10-11 19:58:13,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 84 transitions, 541 flow [2024-10-11 19:58:13,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:58:13,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:58:13,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-10-11 19:58:13,438 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4978723404255319 [2024-10-11 19:58:13,438 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 317 flow. Second operand 5 states and 117 transitions. [2024-10-11 19:58:13,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 84 transitions, 541 flow [2024-10-11 19:58:13,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 84 transitions, 536 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:58:13,444 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 337 flow [2024-10-11 19:58:13,446 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=337, PETRI_PLACES=70, PETRI_TRANSITIONS=65} [2024-10-11 19:58:13,447 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 21 predicate places. [2024-10-11 19:58:13,447 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 337 flow [2024-10-11 19:58:13,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:13,447 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:13,447 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 19:58:13,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-11 19:58:13,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:13,649 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-11 19:58:13,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:13,649 INFO L85 PathProgramCache]: Analyzing trace with hash 762599180, now seen corresponding path program 2 times [2024-10-11 19:58:13,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:13,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206500368] [2024-10-11 19:58:13,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:58:13,650 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:13,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:13,652 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:58:13,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-11 19:58:13,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:58:13,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:58:13,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 19:58:13,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:13,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:58:13,994 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:13,994 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:58:14,579 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:14,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:14,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206500368] [2024-10-11 19:58:14,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206500368] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:58:14,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:58:14,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:58:14,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813998947] [2024-10-11 19:58:14,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:58:14,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:58:14,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:14,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:58:14,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:58:14,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-11 19:58:14,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 337 flow. Second operand has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:14,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:14,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-11 19:58:14,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:17,060 INFO L124 PetriNetUnfolderBase]: 3028/4614 cut-off events. [2024-10-11 19:58:17,060 INFO L125 PetriNetUnfolderBase]: For 8268/8674 co-relation queries the response was YES. [2024-10-11 19:58:17,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15029 conditions, 4614 events. 3028/4614 cut-off events. For 8268/8674 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 25604 event pairs, 2085 based on Foata normal form. 272/4652 useless extension candidates. Maximal degree in co-relation 14916. Up to 4095 conditions per place. [2024-10-11 19:58:17,097 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 43 selfloop transitions, 31 changer transitions 0/83 dead transitions. [2024-10-11 19:58:17,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 83 transitions, 581 flow [2024-10-11 19:58:17,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 19:58:17,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 19:58:17,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 330 transitions. [2024-10-11 19:58:17,100 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3191489361702128 [2024-10-11 19:58:17,101 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 337 flow. Second operand 22 states and 330 transitions. [2024-10-11 19:58:17,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 83 transitions, 581 flow [2024-10-11 19:58:17,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 83 transitions, 576 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:58:17,116 INFO L231 Difference]: Finished difference. Result has 95 places, 83 transitions, 520 flow [2024-10-11 19:58:17,117 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=520, PETRI_PLACES=95, PETRI_TRANSITIONS=83} [2024-10-11 19:58:17,117 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 46 predicate places. [2024-10-11 19:58:17,118 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 83 transitions, 520 flow [2024-10-11 19:58:17,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:17,118 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:17,118 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:17,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-11 19:58:17,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:17,319 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-11 19:58:17,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:17,319 INFO L85 PathProgramCache]: Analyzing trace with hash -519029933, now seen corresponding path program 1 times [2024-10-11 19:58:17,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:17,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312635221] [2024-10-11 19:58:17,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:17,320 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:17,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:17,321 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:58:17,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-11 19:58:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:17,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 19:58:17,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:17,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:58:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:17,717 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:58:18,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:18,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:18,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312635221] [2024-10-11 19:58:18,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1312635221] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:58:18,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:58:18,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:58:18,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282602403] [2024-10-11 19:58:18,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:58:18,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:58:18,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:18,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:58:18,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:58:19,019 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-10-11 19:58:19,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 83 transitions, 520 flow. Second operand has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:19,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:19,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-10-11 19:58:19,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:22,990 INFO L124 PetriNetUnfolderBase]: 10996/15841 cut-off events. [2024-10-11 19:58:22,990 INFO L125 PetriNetUnfolderBase]: For 26597/27640 co-relation queries the response was YES. [2024-10-11 19:58:23,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52787 conditions, 15841 events. 10996/15841 cut-off events. For 26597/27640 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 95571 event pairs, 5041 based on Foata normal form. 1074/15679 useless extension candidates. Maximal degree in co-relation 52728. Up to 3984 conditions per place. [2024-10-11 19:58:23,158 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 228 selfloop transitions, 43 changer transitions 0/279 dead transitions. [2024-10-11 19:58:23,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 279 transitions, 2038 flow [2024-10-11 19:58:23,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 19:58:23,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 19:58:23,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 362 transitions. [2024-10-11 19:58:23,162 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48138297872340424 [2024-10-11 19:58:23,162 INFO L175 Difference]: Start difference. First operand has 95 places, 83 transitions, 520 flow. Second operand 16 states and 362 transitions. [2024-10-11 19:58:23,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 279 transitions, 2038 flow [2024-10-11 19:58:23,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 279 transitions, 1958 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-10-11 19:58:23,262 INFO L231 Difference]: Finished difference. Result has 107 places, 99 transitions, 717 flow [2024-10-11 19:58:23,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=717, PETRI_PLACES=107, PETRI_TRANSITIONS=99} [2024-10-11 19:58:23,263 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 58 predicate places. [2024-10-11 19:58:23,264 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 99 transitions, 717 flow [2024-10-11 19:58:23,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:23,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:23,265 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:23,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-10-11 19:58:23,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:23,468 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-11 19:58:23,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:23,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1575840332, now seen corresponding path program 1 times [2024-10-11 19:58:23,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:23,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533955964] [2024-10-11 19:58:23,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:23,469 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:23,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:23,470 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:58:23,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-11 19:58:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:23,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 19:58:23,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:23,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:58:23,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:58:23,783 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:58:24,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:58:24,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:24,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533955964] [2024-10-11 19:58:24,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533955964] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:58:24,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:58:24,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:58:24,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779913643] [2024-10-11 19:58:24,178 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:58:24,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:58:24,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:24,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:58:24,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:58:24,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-11 19:58:24,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 99 transitions, 717 flow. Second operand has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:24,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:24,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-11 19:58:24,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:28,919 INFO L124 PetriNetUnfolderBase]: 18644/27433 cut-off events. [2024-10-11 19:58:28,919 INFO L125 PetriNetUnfolderBase]: For 71097/77089 co-relation queries the response was YES. [2024-10-11 19:58:29,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100914 conditions, 27433 events. 18644/27433 cut-off events. For 71097/77089 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 175245 event pairs, 3387 based on Foata normal form. 2848/29864 useless extension candidates. Maximal degree in co-relation 100851. Up to 7251 conditions per place. [2024-10-11 19:58:29,296 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 332 selfloop transitions, 36 changer transitions 2/380 dead transitions. [2024-10-11 19:58:29,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 380 transitions, 3381 flow [2024-10-11 19:58:29,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 19:58:29,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 19:58:29,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 344 transitions. [2024-10-11 19:58:29,300 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.563011456628478 [2024-10-11 19:58:29,301 INFO L175 Difference]: Start difference. First operand has 107 places, 99 transitions, 717 flow. Second operand 13 states and 344 transitions. [2024-10-11 19:58:29,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 380 transitions, 3381 flow [2024-10-11 19:58:29,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 380 transitions, 3240 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-10-11 19:58:29,522 INFO L231 Difference]: Finished difference. Result has 116 places, 110 transitions, 854 flow [2024-10-11 19:58:29,522 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=854, PETRI_PLACES=116, PETRI_TRANSITIONS=110} [2024-10-11 19:58:29,523 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 67 predicate places. [2024-10-11 19:58:29,523 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 110 transitions, 854 flow [2024-10-11 19:58:29,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:29,523 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:29,523 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:29,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-11 19:58:29,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:29,724 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-11 19:58:29,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:29,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1749389426, now seen corresponding path program 1 times [2024-10-11 19:58:29,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:29,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265717539] [2024-10-11 19:58:29,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:29,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:29,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:29,726 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:58:29,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-11 19:58:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:29,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 19:58:29,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:29,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:58:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:58:30,123 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:58:30,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:58:30,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:30,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265717539] [2024-10-11 19:58:30,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265717539] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:58:30,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:58:30,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:58:30,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205059553] [2024-10-11 19:58:30,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:58:30,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:58:30,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:30,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:58:30,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:58:30,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-11 19:58:30,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 110 transitions, 854 flow. Second operand has 14 states, 14 states have (on average 13.857142857142858) internal successors, (194), 14 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:30,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:30,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-11 19:58:30,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:38,211 INFO L124 PetriNetUnfolderBase]: 32946/48236 cut-off events. [2024-10-11 19:58:38,212 INFO L125 PetriNetUnfolderBase]: For 168468/179741 co-relation queries the response was YES. [2024-10-11 19:58:38,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192747 conditions, 48236 events. 32946/48236 cut-off events. For 168468/179741 co-relation queries the response was YES. Maximal size of possible extension queue 956. Compared 321542 event pairs, 6357 based on Foata normal form. 5615/52579 useless extension candidates. Maximal degree in co-relation 192679. Up to 13796 conditions per place. [2024-10-11 19:58:38,771 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 369 selfloop transitions, 37 changer transitions 4/424 dead transitions. [2024-10-11 19:58:38,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 424 transitions, 4096 flow [2024-10-11 19:58:38,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 19:58:38,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 19:58:38,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 332 transitions. [2024-10-11 19:58:38,774 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5433715220949263 [2024-10-11 19:58:38,774 INFO L175 Difference]: Start difference. First operand has 116 places, 110 transitions, 854 flow. Second operand 13 states and 332 transitions. [2024-10-11 19:58:38,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 424 transitions, 4096 flow [2024-10-11 19:58:39,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 424 transitions, 3855 flow, removed 60 selfloop flow, removed 4 redundant places. [2024-10-11 19:58:39,129 INFO L231 Difference]: Finished difference. Result has 128 places, 121 transitions, 976 flow [2024-10-11 19:58:39,130 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=976, PETRI_PLACES=128, PETRI_TRANSITIONS=121} [2024-10-11 19:58:39,130 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 79 predicate places. [2024-10-11 19:58:39,130 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 121 transitions, 976 flow [2024-10-11 19:58:39,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.857142857142858) internal successors, (194), 14 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:39,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:39,131 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:39,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-11 19:58:39,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:39,332 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-11 19:58:39,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:39,332 INFO L85 PathProgramCache]: Analyzing trace with hash 348062749, now seen corresponding path program 1 times [2024-10-11 19:58:39,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:39,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339805063] [2024-10-11 19:58:39,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:39,333 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:39,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:39,334 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:58:39,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-11 19:58:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:39,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 19:58:39,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:39,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:58:39,908 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:39,908 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:58:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:41,314 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:41,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339805063] [2024-10-11 19:58:41,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339805063] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:58:41,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:58:41,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2024-10-11 19:58:41,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514804014] [2024-10-11 19:58:41,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:58:41,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 19:58:41,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:41,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 19:58:41,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-10-11 19:58:42,122 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-11 19:58:42,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 121 transitions, 976 flow. Second operand has 18 states, 18 states have (on average 13.88888888888889) internal successors, (250), 18 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:42,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:42,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-11 19:58:42,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:11,425 INFO L124 PetriNetUnfolderBase]: 96829/135987 cut-off events. [2024-10-11 19:59:11,425 INFO L125 PetriNetUnfolderBase]: For 683769/701616 co-relation queries the response was YES. [2024-10-11 19:59:12,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623637 conditions, 135987 events. 96829/135987 cut-off events. For 683769/701616 co-relation queries the response was YES. Maximal size of possible extension queue 2617. Compared 958797 event pairs, 32662 based on Foata normal form. 9488/133286 useless extension candidates. Maximal degree in co-relation 623564. Up to 43355 conditions per place. [2024-10-11 19:59:13,361 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 719 selfloop transitions, 80 changer transitions 0/816 dead transitions. [2024-10-11 19:59:13,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 816 transitions, 8045 flow [2024-10-11 19:59:13,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-11 19:59:13,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-11 19:59:13,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 651 transitions. [2024-10-11 19:59:13,365 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.532733224222586 [2024-10-11 19:59:13,365 INFO L175 Difference]: Start difference. First operand has 128 places, 121 transitions, 976 flow. Second operand 26 states and 651 transitions. [2024-10-11 19:59:13,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 816 transitions, 8045 flow